Variable condenser



Jam v15, 1929.

G. MERLE, SR

VARIABLE GONDENSER 9 Filed 1999.5. 192' CJP lo 2 Patented `lan. 15, 1929.

iPA'raN'r oFFIcE.

GEORGE MERLE, SR., OF BROOKLYN, NEW YORK.

VARIABLE CONDENSER.

Application filed February This invention relates z to variable condensers and particularly to devices of this class employing tWo or more condenser units mounted in a single frame or support, each condenser unit comprising rotorand statoi plates; and the object of thel invention is to provide a device of the class specilicd, constructed in such manner that two or more condenser units of a radio receiving circuit may be contained in a single casing in which the separate condensers are operatable; a further object being to provide means for independently rotating the rotors of the separate condenser units and With additional means whereby rotors of all of the units may be collectively operated; a further object of my invention resides in the provision of a device of the class specified, so constructed that the rotors of the separate condenser units may be adjusted relatively to the rotors of other condenser units for the purpose of tuning the upper coils or that part of the circuit in connection with which the condensers are employed, vvhereby when a proper relation of the rotors of the separate units has been ascertained, the means for simultaneously operating all of the rotors may be moved into operative position, thereby producing a one knob control for all of the condenser units and with these and other 0bjccts in view, the invention consists in a device of the class and for the purpose specilicd, which is simple in construction, ecient in use, and which is constructed as hereinafter described and claimed.

',lhe invention is fully disclosed in the following specification, of which the accompanying drawing 'forms a part, in which the separate parts ot' my improvement are designated by suitable reference characters in cach of the views, and in which Fig. 1 is a face view of a part of a panel or other support showing my improved condenser mounted in connection therewith, with parts of the construction broken away and in section; and,

Fig. 2 a transverse section through the condenser shown in Fig. 1.

The condenser shown and described herein is an improvement on that shown and described in a prior application :tor Letters Patent of the United States, filed by me April 10, 1925, and bearing Serial No. 22,104, and the distinctive features of my improved 5, 1926'. Serial No. 86,318.

structure are shown in the accompanying drawing and .hereinafter described.

In the drawing, I have shown for the purpose of illustrating one use of my invention, y

two frame members 5 and 6 which may be" composed ot' rubber, bakeliteor any similar material. These frame members are secured together and spaced apart by corner posts 7 through which bolts or similardevices 8 may pass in' securing the condenser to theA panel or other support 9 of a radio receiving apparatus. The frame members 5 and 6 are rectangular` in form', and in the construction shown are divided by plates 10 and 11 extending from corner to corner, and crossing centrally into four triangular sections, in which the separate condenser units are mounted. The plates 10 and 11 may be composed of insulating or conducting material, as may be desired, and are spaced from the stator plates 12, 13, 14 and 15 of the separate condenser units, the stator plates 12 constituting one unit, the plates 13 another unit, etc.

The plates 12-15 in the construction shown are triangular in form and secured within and between the frames 5 and 6 by bolts 16 passingthrough the corner portions of said plates as clearly seen in Fig. l of the drawing. One of the bolts of each condenser unit is extended to form terminals 17 with which circuit. Wires may be connected. A plurality of rotor plates 12a, 13a, 14 and 15n are mounted for cooperation with the stator plates 12-15 of the separate units, and said rotor plates are each mounted on shafts 18 which project-'forwardly through the frame 5 and through the panel 9, and are provided at their outer ends with knob dials 19, by means of which the shafts 18 and the rotor plates thereon may be rotated into and out of engagement with the stator plates of the separate condenser units.

Mounted on each shaft 18 preferably between t-he frame 5 and lthe panel 9 are gears 20 which do not mesh with each other but are adapted to mesh With a gear 21 mounted on a shaft 22Vwhich is rotatably and slidably mounted in a bushing 23 mounted in the panel 9. The outer end ofthe shaft 22 is provided with a knob dial 24, by means of which the shaft 22 and gear 21 may be rotated. The shaft 22 is/provided with tWo annular grooves 25 and 26 in connection with which a springpressed ball or other member 27 isl adapted to operate to retain the gear 21 in engagement with'the gears 20 as seen in Fig. 2 of the drawing, and when said ball is operating in the groove 25, or to retain the gear 2l out of engagement with the gears when the lnob dial shaftand gear 21 have beenmoved outwardly by hand, and the ball 2l is in engage- #ment with the groove 26 in said shaft 22. In

the last named position of the gear 21, it will be apparent that the separate rotor plates 12a-l5a may be independently adj usted with Vrespect to the stator plates 12-15, butV by moving the gear 2l into the .position shown in Fig. 2 of the drawings, or into mesh with l `the gears 20, all of the rotor plates 12a-45a may be rotated through the single knob dial 24.

. or by means of one conductor, or wires of separate circuits may be directedto the stator plates of the separate condenser 'units in the It will be understood that all of the rotor plates may be coupled together in one circuit and various changes therein and modiiications thereof may be made within the scope of the appended claims, without departing from the spirit .of my invention or sacrificing its advantages.

With my lmproved constructin, it will be noted that the mounting of the stator plates, which are triangular in form in the construction shown, is such that the short sides of said triangular plates are arrangedi adjacent each other in the respective units so as bring the intersection of said sides to the approximate central portion of the frame, and the long sides of said plates arearranged in substantial parallelism'and adjacent to the outer side edges of the front and rear plates of the frame, thus forming within-the frame in a compact fashion, a plurality ot" fields, each field containing the stator plates of separate and independent condenser units and the fulcrum or 'shafts of the rotor plates of the separate units are arranged centrally of and adjacent the long sides of the stator plates and the corresponding outer side edges of the 'rame plates. Thus, when all of the rotor plates are moved within the fields of the stator plates, the entire unit is bounded by the edges of the frame plates thereof.' In otherwords, in the operation of the rotor plates, they are moved into `said elds and outwardly with respect thereto and to the frame. With this construction, a very compact condenser unit is produced, and a unit occupying the least amount of space for packing, shipment and other purposes. I-Iaving fully I claim as new and desire to secure by Letters Patent, is

1. A ycondenser of the class described comdescribed my invention, what prising a frame, a lplurality of independent 'A condenser 'units in said frame and mounted in an edge to edge relation, each of said units comprising stator plates and rotor plates, means for adjusting the position of the rotor plates with reference to the stator plates of the separate units, and means cooperating with the iirst namedwmeans of the separate units for actuating the rotor plates of all of theunits from a single control.-

2. A condenser of the class described comprising a frame, a plurality of condenser units in said Jframe, each of said units comprising stator plates`and rotor plates, means :tor adjusting the position of the rotor plates with reference to the stator plates of the separate units, means cooperating with the irst named means of the separate units for actuating the rotor plates ot all of the units from a single control, said last named means being movable into operative and inoperative positions, and means for retaining the same in such positions, and said condenser units being mounted within the tram-e with the stator plates thereof edge to edge, and partition walls between the adjacent edges of said stator plates.

3. A condenser of the class described comprising a plurality of independent condenser units for controlling independent circuits,` and means whereby the separate condenser units maybe actuated for balancing adjustment, means involving a single control for operating collectively and simultaneously, the rotor plates of all of the condenser units, said last named means involving gears on the shafts of the rotor plates, and another gear adapted to be moved into and. out of mesh with the first named gears.

4. A condenser of the class described comprising a plurality ofindependent condenser units for controlling independent circuits, and means whereby the separate condenser units may be actuated for balancing adjustment, means involving a single-control for operating collectively and simultaneously, the rotor plates of all of the condenser units, said last named means involving gears on the shafts of the rotor plates, and another gear adaptedl to be moved into and out of mesh with the first namedgears, and means for holding the last named gear in operative and inoperative positions.

5. A condenser of the class described comprising a plurality of independent condenser units for controlling independent circuits, and means whereby the separate condenser units may be actuated for balancing adjustment, means involving a single control for operating collectively\ and simultaneously,

A'the rotor plates of all of the condenser units,

arate rame parts within and between which' is supported a rplurality of sets of stator plates, each set being independent of the other, and a plurality of sets of rotor plates mounted in the frame -and cooperating with the separate sets of stator plates to form independent condenser unitsin said frame,

means involving knob dials on each unit-icon actuating therotor plates thereof, and'means involving another knob dial .whereby the rotor plates of all of the condenser-units may be flzontrolled and operated from a single contro f V 7. A condenser of the class described comprising a frame, a plurality of condenser units in said frame and each consisting ot stator plates and movable plates, andrt 1e stator plates of said units being positignededge to edge andadjacent in saidframe, and means for operating the movable plates of each of saidunits. l Y

8.' A condenser of the class described comprising a frame, a plurality ,of condenser units 1nV said frame and each consistmg of stator plates and movable plates, the stator plates of said units beingpositioned edge to edge and adjacentin said frame, and independent lcontrol and operatingdevices for the movable plates of the separate units whereby each condenser unit may be operated independently of the other. f

9.A condenser ofltheclass described comprising a iame, a plurality of c'nndenseih unitsin said frame land each consisting of stator plates and movable plates, the statorVV plates of said units being positioned edge tov edge' and adjacent in said frame, independent control' and operating devices tor the movable plates of the separate units whereby each condenser unit may be operated independently of the other, and means involving stator platesand movable plates, the stator asingle control whereby all Aof the movable "plates may be collectively operated. 'i

l`l0. A condenser of the class described comprising a frame, a plurality of condenser units in ,said frame and each consisting of plates of said units being positioned edge to edge and. adjacent in said frame, independent control and operating devices for the movable plates of the separate units whereby each condenser unit may be operated independentlyl of the other, means involving a vsingle controlI whereby all of the movable plates may be collectively operated, and 1 s means in the frame for subdividing the condenser. units one from the other. t

11. A condenserof the class described comprising a rectangular frame composed of spaced frame parts, a plurality of independent condenser units mounted within and between said frame parts, the inner ends of the stator plates of said units being adjacent een- 'trally of said frame partsfthe shafts of the" rotor plates being spaced from and 'arranged adjacent the outer edges of thesstator plates in each unit and at lthe side edges of said frame parts whereby said plates may be rotated inwardly into and between the Aframe parts and the stator plates therei'n and outwardly of said .frame parts in the operation thereof.

12. A condenser of the class described comprsing a rectangular frame composed of spaced frame parts, a plurality of independent condenser units mounted within and between said frame parts, the inner ends of the vstator plates of said-units being adjacent Centrally of said frame parts, the shafts of the rotor plates being spaced from and arranged adjacent the outer edgesof the'stator plates in each unit and at the side'edges lof said LJframe parts whereby said plates may be rotated inwardly into and between the frame 'parts and the stator plates therein and outt wardly or" said trame parts in the operationj thereof, and the stator plates of each unit having independent supporting means in said frame parts. l

13. Acondenser of the class described conprisi'ng a rectangular frame composed of spaced frame parts, a vplurality of independentondenserlunits mounted within and Ibetween said frame parts, the inner ends of the stator platesof said units being adjacent centrally of said frame parts, the shafts of the rotor plates being spaced from and arranged adjacent the outer edges of the stat/or plates in each unit and at the side edges of said frame parts whereby said plates may be rotated in-I wardly intoV andbetween the trame parts and `the stator plates therein and outwardly of said Jframe parts in the operation thereof, the stator plates et each unit having .independent supporting means in 'said frame parts, means whereby the rotor platesot each unit may be independently operated, and means involving a single control in operativevconnection withy the rotor plates of all of said units for'simul- .taneously actuating the' same.

liu 9 14. A condenserof the class describedcom-I prisi'ng n I of ependent stator plate units mounted 125l move into the .elds' ofl the' separate Astator plate units, and outwardly beyond said frame parts and stator plate units, in the operation thereof. l

5 l5. A condense of the class described cornprising two spaced frame parts, a'plurality of independent stator plate units mounted between said frame parts, edge to edge, and in adjacent and spaced relation, forming a pluy10 rality of independent fields, a plrality of in- E dependent. movable plate units cooperating with the stator plate units and mounted to move into the fields of the separate stator plate-units and outwardly beyond said frame parts and stator plate nnits,' in the operation thereof, and meansbeween said frame parts for partitioning the separate fields one Vtrom the other. In testimony that. I claim the foregoing as my invention I havel signed myname this 1st 20 day of February,

l GCEORGJ MERLE, SR. 

